Hi Tim:

You might look into the DS3232 which can be combined with a PIC to control the 
aging rate register.
http://www.maximintegrated.com/datasheet/index.mvp/id/4984

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

Tim Bastian wrote:
Hi all,

I'm a time nut newbie. My obsession started with the search for an accurate 
chronometer to carry on my boat for celestial navigation. Yes there still are a 
few of us left that practice the art.

My current project is a quartz chronometer using a DS32Khz tcxo oscillator and 
two 74HC4060s (+ or- 10 seconds / year).

For my next project I'm looking at an Abricon Part Number AOCJY2-10.000MHZ  
ocxo 5 ppb running through a pic and using the algorithm posted on 
http://www.romanblack.com/one_sec.htm. I'm shooting for + or - 1 seconds / year.

  Is there an archive of old posts that might be helpful in answering some of 
my questions and for getting ideas.

Thanks,

   Tim KK4FQB

Sent from my Motorola ATRIX™ 4G on AT&T
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